Results 1 to 9 of 9

Thread: Required System Power

  1. #1
    Registered+
    Join Date
    Aug 2007
    Posts
    17
    Thanks
    0
    Thanked
    0 times in 0 posts

    Required System Power

    I plan to run a machine with the following spec with a 380W power supply.

    Is 380W enough to run OK and what is the method of determining what power rating of a supply is necessary please?

    GCS-XR385H512
    Sapphire 512Mb Radeon HD 3850 PCI-Express 2 VGA Card

    CPA-AP2720
    AMD Phenom II X3 720 Socket AM3 Tripple-Core Processor - Ret

    MEC-D3-4096T169
    Corsair TwinX 4Gb DDR3 1600 (2x2Gb) CAS9 DHX Module

    MBG-MA79XTUD4P
    GigaByte MA790XT-UD4P AM3,DDR3,CFire,SATA2,GBLan,ATX

  2. #2
    Senior Member
    Join Date
    Oct 2004
    Posts
    1,731
    Thanks
    230
    Thanked
    151 times in 132 posts
    • Sputnik's system
      • Motherboard:
      • J&W 790GX Extreme
      • CPU:
      • AMD Phenom II 720be
      • Memory:
      • OCZ DDR2-6400
      • PSU:
      • Enermax

    Re: Required System Power

    You need to give more info, Will you be overclocking, How many HDD's, Optical drives, Fans, Extra PCI cards etc. etc.

    And even then it depends on the make of the PSU in question. Keep in mind that a cheap 380W PSU will never be able to supply 380W and will have gone bang long before it got close to it.

  3. #3
    Lover & Fighter Blitzen's Avatar
    Join Date
    Oct 2006
    Location
    Between Your Mum & Sister
    Posts
    6,310
    Thanks
    539
    Thanked
    382 times in 300 posts
    • Blitzen's system
      • Motherboard:
      • ABIT iX38 QuadGT
      • CPU:
      • Intel Quad Q6600 @ 3.6Ghz : 30 Degrees Idle - 41-46 Degrees Load
      • Memory:
      • 4 x 1GB OCZ Platinum PC6400 @ 4-4-4-12
      • Storage:
      • 2 x 500GB Samsung Spinpoints - RAID 0
      • Graphics card(s):
      • GTX 285
      • PSU:
      • Enermax MODU 82+ 625W
      • Case:
      • Antec Nine Hundred
      • Operating System:
      • Windows 7 Ultimate 64Bit
      • Monitor(s):
      • Viewsonic Q22wb 22" Widescreen - 5ms
      • Internet:
      • O2 premium @ 17mb

    Re: Required System Power

    If its a decent 380W then it will handles things without a hitch.

    Wont have much head room for upgrading though.

  4. #4
    Bows out! CAT-THE-FIFTH's Avatar
    Join Date
    Aug 2006
    Location
    Hopefully somewhere less backstabby
    Posts
    28,789
    Thanks
    3,203
    Thanked
    4,456 times in 3,442 posts
    • CAT-THE-FIFTH's system
      • Motherboard:
      • Less E-PEEN
      • CPU:
      • Massive E-PEEN
      • Memory:
      • RGB E-PEEN
      • Storage:
      • Not in any order
      • Graphics card(s):
      • EVEN BIGGER E-PEEN
      • PSU:
      • OVERSIZED
      • Case:
      • UNDERSIZED
      • Operating System:
      • DOS 6.22
      • Monitor(s):
      • NOT USUALLY ON....WHEN I POST
      • Internet:
      • FUNCTIONAL

    Re: Required System Power

    Quote Originally Posted by Blitzen View Post
    If its a decent 380W then it will handles things without a hitch.

    Wont have much head room for upgrading though.
    Also I would not try overclocking the CPU too!!

    I would at least go for a decent 400w PSU as a bare minimum. If you want to save a few watts I would go for a 780G motherboard and an HD4670 graphics card instead of the 790GX and HD3850.

  5. #5
    Registered+
    Join Date
    Aug 2007
    Posts
    17
    Thanks
    0
    Thanked
    0 times in 0 posts

    Re: Required System Power

    Well I would also have '750GB Samsung Spinpoint F1 7200rpm 32Mb SATAII Hard Drive' and that would pretty much be it.

    I probably wouldn't overclock but will take your advice and go for 500W which should give me a bit more scope.


    I looked at the HD 4670 as well. As well as the lower power rating would it's spec compare well against the HD 3850 ?

  6. #6
    Member
    Join Date
    Feb 2009
    Posts
    103
    Thanks
    3
    Thanked
    5 times in 5 posts
    • Leggie's system
      • Motherboard:
      • Asus M4A785TD-V EVO
      • CPU:
      • AMD Athlon X4 620
      • Memory:
      • 2 x 2GiB G.Skill Ripjaws DDR3 PC3-12800C7
      • PSU:
      • QTechnology QT-03400G 400W
      • Operating System:
      • Windows 7 Home Premium x64
      • Monitor(s):
      • Dell 2709W

    Re: Required System Power

    I've used this online calculator in the past to work out my power supply needs.

  7. #7
    Bows out! CAT-THE-FIFTH's Avatar
    Join Date
    Aug 2006
    Location
    Hopefully somewhere less backstabby
    Posts
    28,789
    Thanks
    3,203
    Thanked
    4,456 times in 3,442 posts
    • CAT-THE-FIFTH's system
      • Motherboard:
      • Less E-PEEN
      • CPU:
      • Massive E-PEEN
      • Memory:
      • RGB E-PEEN
      • Storage:
      • Not in any order
      • Graphics card(s):
      • EVEN BIGGER E-PEEN
      • PSU:
      • OVERSIZED
      • Case:
      • UNDERSIZED
      • Operating System:
      • DOS 6.22
      • Monitor(s):
      • NOT USUALLY ON....WHEN I POST
      • Internet:
      • FUNCTIONAL

    Re: Required System Power

    The minimum PSU I would go for would be this Silverpower 400w:

    http://www.scan.co.uk/Products/400w-...2V-6Serial-ATA

  8. #8
    Registered+
    Join Date
    Mar 2009
    Posts
    37
    Thanks
    0
    Thanked
    0 times in 0 posts

    Re: Required System Power

    definately not...

    I would not go for a low end psu if you are powering high spec components because if the psu dies it will definately take an expensive component with it...

    if anything spend £60 - £70 on a decent SCAN listed PSU...

  9. #9
    Senior Member
    Join Date
    Jan 2009
    Location
    London
    Posts
    350
    Thanks
    6
    Thanked
    48 times in 42 posts
    • sadbuttrue's system
      • Motherboard:
      • Gigabyte P55 UD5
      • CPU:
      • i5 750 @ 3.8ghz + Megahalems + GT1450 @ 5v
      • Memory:
      • G.Skill ECO 4GB 1.4v
      • Storage:
      • Intel 320 120gb + Samsung F4 2tb in Scythe Quiet Drive
      • Graphics card(s):
      • 6950 @ 940/1350/1.175v + Shaman @ 20%
      • PSU:
      • Corsair AX750
      • Case:
      • Raven RV02 with 3xPhobya G-Silent Fans @ 210rpm + Scythe S-Flex 1200 @ 5v
      • Operating System:
      • Windows 7
      • Monitor(s):
      • Samsung 2233rz, Dell 2209wa, Panasonic AX200 Projector
      • Internet:
      • BeThere 24mb

    Re: Required System Power

    As above, the wattage is less important than the quality. I'm currently pushing 320 watts at full cpu & gfx load through a 4 year old Seasonic 430watt PSU. It barely breaks a sweat.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Windows - boot process & simple troubleshooting
    By Paul Adams in forum Software
    Replies: 30
    Last Post: 17-11-2010, 04:38 AM
  2. HOWTO: Overclock C2D Quads and C2D Duals - A Guide v1.0
    By graysky in forum PC Hardware and Components
    Replies: 37
    Last Post: 08-10-2008, 07:44 PM
  3. System & SATA power consumption
    By freeflyer in forum PC Hardware and Components
    Replies: 2
    Last Post: 19-07-2006, 05:52 PM
  4. Enough Gfx power - advice for new system
    By Chunkers in forum Graphics Cards
    Replies: 4
    Last Post: 20-06-2006, 05:23 PM
  5. ok, 6800 ultra.. can my system power it?
    By myth in forum Graphics Cards
    Replies: 14
    Last Post: 08-11-2004, 10:36 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •